District of



(New s. D. WEBB & s. 0. SWETT.

PRINTERS QUOIN. No. 403,402. Patented May 14, 1889.

q flr/neooeo I ammo c MM w W UNITED STATES PATENT OFFICE.

SAMUEL D. WEBB AND SULLIVAN C. SWETT, OF XVASHINGTON, DISTRICT OFCOLUMBIA, ASSIGNORS, BY DIRECT AND MESNE ASSIGNMENTS, TO SAID SIVETT ANDTHOMAS A. MITCHELL, OF SAME PLACE.

PRINTERS QUOIN.

SPECIFICATION forming part of Letters Patent No. 403,402, dated May 14,1889.

Application filed May 15, 1888- Serial No. 273,973. (No model.)

To all whom it may concern.-

Be it known that we, SAMUEL D. WEBB and SULLIVAN O. SWETT, citizens ofthe United States of America, residing at Washington, in

the District of Columbia, have invented certain new and usefulImprovements in Printers Quoins, of which the following is aspecification, reference being had therein to the accompanying drawings.

Our invention relates to quoins for locking up forms of type; and itconsists in a quoin constructed in the form of a toothed cylinderprovided at each end with a loosely-riveted roller of a diameterslightly larger than the diameter of the cylinder, these quoins beingused with short pieces of metal furniture straight on one side andinclined on the other side, the inclined side having a central toothedrib formed thereon.

Figure 1 of the accompanying drawings is a plan view of a form of typelocked up by our improved quoins. Fig. 2 is a perspective view of one ofthe quoins. Fig. 3 is a vertical section of the quoin shown in Fig. 2.Fig.

2 5 4 is a perspective View of the metal furniture.

Fig. 5 is an elevation of the key used for looking up and unlocking theform.

In order to enable others skilled in the art to make and use ourinvention, we will proceed to describe it with reference to thedrawings.

A represents our improved quoin, which consists of a cylinder, 0,toothed longitudinally, as seen in Figs. 2 and 3, and two roll- 3 5 ers,a one at each end of the cylinder. These rollers are loosely secured onthe cylinder, preferably in the following manner: The cylinder isshouldered circumferentially, as at 1, and the rollers are beveled offon one inner 4o edge, as at 2. Then, when the rollers are placed overthe ends of the cylinder until they rest against the shoulders, the endsof the cylinder are riveted down, as at 3. By this means the rollers areheld in place on the cylinder,

and yet are free to revolve thereon.

As will be seen in Figs. 2 and 3, the cylinder is of less diameter thanthe rollers, and is formed with a square hole centrally through it forthe reception of the key K, by which the quoin is operated to lock andunlock the 01111.

Our quoins may be cast or otherwise formed of brass or other suitablemetal.

B represents a piece of metal furniture straight on one side andinclined on the other. 5 5 On the inclined side there is formed a raisedtoothed rib, Z), which extends centrally the entire length of thefurniture. WVe prefer to make the furniture of wrought-iron and inlengths of from three to five inches, in which ()0 case it is necessaryto use only one quoin with each piece; but it is evident that the sideand foot sticks may each be formed with a series of ribbed and toothedinclines, in which case, as in the case of the short lengths offurniture, there will be but one quoin for each incline.

C represents reglets placed between the form and furniture to fill out,as will be readily understood.

K represents the key, the squared lower end,

713, of which is adapted to fit the opening in the quoin, the handlebeing formed at one end with a screw-driver, 7t, and at the other endwith a hammer, 70

In looking up a form the chase D is put on, and then reglets or otherstraight pieces of furniture are placed next the type to fill out untilthe quoins, when in place, will bear against the chase. The inclinedfurniture and the quoins are then set, after which the latter are turnedby the key K in the direction of the arrow, which causes the teeth onthe quoins to engage with the teeth on the furniture, whereby the quoinsare carried up the incline with a wedging action. It will be noticed,however, that as the rollers of the quoin are slightly larger than thecylinder they alone bear against the chase, allowing the cylinder toturn freely, and that as the diameter 0 of the rollers is notsufficiently greater than that of the cylinder to permit them to roll onthe plane surfaces of the furniture there can be no tendency todisengage the cylinder from the toothed rib. It results from this 5construction that as the quoin is operated cylinder, oneof said rollersbeing loosely attached to each end of the cylinder, substantially asdescribed, and for the purposes set forth. 1

In testimony whereof We affix our signatures in presence 01 twoWitnesses.

SAMUEL D. WEBB. SULLIVAN O. SWETT.

\Vitnesses:

A. B. WEBB, M. V. WEBB,

